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EP-4742449-A1 - ANTENNA MODULE WITH A FULL BAND CELLULAR ANTENNA FOR A TELEMATICS CONTROL UNIT FOR A VEHICLE

EP4742449A1EP 4742449 A1EP4742449 A1EP 4742449A1EP-4742449-A1

Abstract

The invention relates to an antenna module (1) for a telematics control unit (2), said antenna module (1) comprising at least one full band cellular antenna (10) and an electronic support (11) configured to support said full band cellular antenna (10), wherein said full band cellular antenna (10) is metal stamped and comprises : - a body (100), - a feeding pin (101.1) that is configured to transmit and receive power for the full band antenna cellular (10), and - a first loading pin (101.2) that is connected to a first reactive component (17) and that is configured to tune the full band cellular antenna (10) to resonate according to a frequency within the first frequency band (F1), - a ground pin (101.3) that is connected to a second reactive component (18) to generate a resonance of the full band cellular antenna (10) in a second frequency band (F2), - a second loading pin (101.4) that is connected to a third reactive component (19) and that is configured to tune the full band cellular antenna (10) to resonate according to a frequency within the first frequency band (F1).

Inventors

  • ATMATZAKIS, GEORGIOS
  • JAFARI, Ahmadreza

Assignees

  • Valeo Comfort and Driving Assistance

Dates

Publication Date
20260513
Application Date
20241107

Claims (10)

  1. Antenna module (1) for a telematics control unit (2), said antenna module (1) comprising at least one full band cellular antenna (10) and an electronic support (11) configured to support said full band cellular antenna (10), wherein said full band cellular antenna (10) is metal stamped and comprises : - a body (100), - a feeding pin (101.1) that is configured to transmit and receive power for the full band antenna cellular (10), and - a first loading pin (101.2) that is connected to a first reactive component (17) and that is configured to tune the full band cellular antenna (10) to resonate according to a frequency within the first frequency band (F1), - a ground pin (101.3) that is connected to a second reactive component (18) to generate a resonance of the full band cellular antenna (10) in a second frequency band (F2), - a second loading pin (101.4) that is connected to a third reactive component (19) and that is configured to tune the full band cellular antenna (10) to resonate according to a frequency within the first frequency band (F1).
  2. Antenna module (1) according to claim 1, wherein said body (100) comprises : said body (100) comprises : - a loop (1000) that goes from the feeding pin (101.1) to the first loading pin (101.2) and a first arm (1001) that is linked to said loop (1000), said loop (1000) and said first arm (1001) being configured to create a resonance of said full band cellular antenna (10) in said first frequency band (F1).
  3. Antenna module (1) according to any of the preceding claims, wherein said first reactive component (17), second reactive component (18) and third reactive component (19) are inductors or capacitor.
  4. Antenna module (1) according to any of the preceding claims, wherein the feeding pin (100.1) is connected to a matching network (118).
  5. Antenna module (1) according to any of the preceding claims, wherein said first frequency band (F1) is a low frequency band that goes from 617Hz to 960MHz
  6. Antenna module (1) according to any of the preceding claims, wherein said second frequency band (F2) goes from 1.4GHz to 5GHz.
  7. Antenna module (1) according to any of the preceding claims, wherein said antenna module (1) is configured to be mounted inside the compartment (31) of a vehicle (3) under a roof (30) of said vehicle (3), and that is configured to be connected to a telematics control unit (2) that is arranged away from said antenna module (1).
  8. Antenna module (1) according to any of the preceding claims, wherein said at least one full band cellular antenna (10) is grounded on the electronic support (11) by means of the ground pin (101.3).
  9. Antenna module (1) according to any of the preceding claims, wherein said module antenna (1) comprises : - a first full band cellular antenna (10 1 ) metal stamped and mounted over a first extremity (11.1) of the electronic support (11), - a second full band cellular antenna (10 2 ) metal stamped and mounted over a second extremity (11.2) of the electronic support (11), and - two middle/high band cellular antennas (12 1 , 12 2 ) metal stamped and mounted between the first cellular full band antenna (10 1 ) and the second cellular full band antenna (10 2 )
  10. Telematics control unit (2) for a vehicle (3), said telematics control unit (2) comprising a NAD cellular module (NADm) and a module antenna (1) according to any of the preceding claims that is connected to said NAD cellular module (NADm).

Description

FIELD OF THE INVENTION The present invention relates to an antenna module for a telematics control unit. Such antenna module may be used, but not exclusively, in the automotive domain. The invention also relates to a telematics control unit comprising such a full band cellular antenna. BACKGROUND OF THE INVENTION In the automotive domain, an antenna module for a telematics control unit, known by the man skilled in the art, comprises in particular a full band cellular antenna that is a combination of different mechanical separate elements : a table form antenna element, a strip line resonator beneath the table form antenna with a space in between that controls the coupling between the table form antenna element and the strip line resonator, and a ground plate. The space has to be adapted for the coupling. The full-band cellular antenna is connected to a cellular module. It permits a connection to a base station to estimate the position of the vehicle via a triangulation. It also supports voice and data connectivity within the 5G frequency band. This antenna module is arranged within a telematics control unit for a vehicle. The telematics control unit is arranged on the roof of a vehicle outside the compartment of the vehicle, or under the roof inside the compartment of the vehicle. One problem of this prior art is that the manufacturing of the full band cellular antenna of the antenna module is expensive and complex to manufacture. It is an object of the invention to provide an antenna module for a telematics control unit, which resolves the problem above-stated. SUMMARY OF THE INVENTION To this end, it is provided an antenna module for a telematics control unit, said antenna module comprising at least one full band cellular antenna and an electronic support configured to support said full band cellular antenna, wherein said full band cellular antenna is metal stamped and comprises : a body,a feeding pin that is configured to transmit and receive power for the full band antenna cellular, anda first loading pin that is connected to a first reactive component and that is configured to tune the full band cellular antenna to resonate according to a frequency within the first frequency band,a ground pin that is connected to a second reactive component to generate a resonance of the full band cellular antenna in a second frequency band,a second loading pin that is connected to a third reactive component and that is configured to tune the full band cellular antenna to resonate according to a frequency within the first frequency band. According to non-limitative embodiments of the invention, the antenna module further comprises the following characteristics. In a non-limitative embodiment, said body comprises : a loop that goes from the feeding pin to the first loading pin and a first arm that is linked to said loop, said loop and said first arm being configured to create a resonance of said full band cellular antenna in said first frequency band. In a non-limitative embodiment, said first reactive component, second reactive component and third reactive component are inductors or capacitors. In a non-limitative embodiment, the feeding pin is connected to a matching network. In a non-limitative embodiment, said first frequency band is a low frequency band that goes from 617Hz to 960MHz. In a non-limitative embodiment, said second frequency band goes from 1.4GHz to 5GHz. In a non-limitative variant of embodiment, said second frequency band goes from 1.7GHz to 5GHz. In a non-limitative embodiment, said antenna module is configured to be mounted inside the compartment of a vehicle under a roof of said vehicle, and that is configured to be connected to a telematics control unit that is arranged away from said antenna module. In a non-limitative embodiment, said at least one full band cellular antenna is grounded on the electronic support by means of the ground pin. In a non-limitative embodiment, said module antenna comprises : a first full band cellular antenna metal stamped and mounted over a first extremity of the electronic support,a second full band cellular antenna metal stamped and mounted over a second extremity of the electronic support, andtwo middle/high band cellular antennas metal stamped and mounted between the first cellular full band antenna and the second cellular full band antenna. There is also provided a telematics control unit for a vehicle, said telematics control unit comprising a NAD cellular module and a module antenna according to any of the preceding characteristics that is connected to said NAD cellular module. In a non-limitative embodiment, the telematics control unit is a telematics control unit of a vehicle. BRIEF DESCRIPTION OF THE DRAWINGS Some embodiments of methods and/or system in accordance with embodiments of the present invention are now described, by way of example only, and with reference to the accompanying drawings, in which: Figure 1 illustrates a non-limitative embodiment of